ES2022480B3 - Dispositivo antiefecto larsen para puesto telefonico - Google Patents

Dispositivo antiefecto larsen para puesto telefonico

Info

Publication number
ES2022480B3
ES2022480B3 ES88101780T ES88101780T ES2022480B3 ES 2022480 B3 ES2022480 B3 ES 2022480B3 ES 88101780 T ES88101780 T ES 88101780T ES 88101780 T ES88101780 T ES 88101780T ES 2022480 B3 ES2022480 B3 ES 2022480B3
Authority
ES
Spain
Prior art keywords
loudspeaker
microphone
signal
controlled
threshold
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
ES88101780T
Other languages
English (en)
Inventor
Denis Abraham
Andre Chataignon
Claude Malaurie
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ALE International SAS
Original Assignee
Alcatel Business Systemes SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alcatel Business Systemes SA filed Critical Alcatel Business Systemes SA
Application granted granted Critical
Publication of ES2022480B3 publication Critical patent/ES2022480B3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
    • H04M9/10—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic with switching of direction of transmission by voice frequency

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Telephonic Communication Services (AREA)
  • Percussion Or Vibration Massage (AREA)
  • Telephone Function (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Control Of Amplification And Gain Control (AREA)
ES88101780T 1987-02-10 1988-02-08 Dispositivo antiefecto larsen para puesto telefonico Expired - Lifetime ES2022480B3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR878701650A FR2610772B2 (fr) 1987-02-10 1987-02-10 Dispositif anti-effet larsen pour poste telephonique

Publications (1)

Publication Number Publication Date
ES2022480B3 true ES2022480B3 (es) 1991-12-01

Family

ID=9347770

Family Applications (1)

Application Number Title Priority Date Filing Date
ES88101780T Expired - Lifetime ES2022480B3 (es) 1987-02-10 1988-02-08 Dispositivo antiefecto larsen para puesto telefonico

Country Status (6)

Country Link
EP (1) EP0280105B1 (es)
AT (1) ATE63659T1 (es)
DE (1) DE3862772D1 (es)
ES (1) ES2022480B3 (es)
FR (1) FR2610772B2 (es)
GR (1) GR3002352T3 (es)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL155700B (nl) * 1971-12-08 1978-01-16 Philips Nv Luidsprekende telefooninrichting.
FR2500698B1 (fr) * 1981-02-20 1989-02-17 Thomson Csf Mat Tel Dispositif anti-effet larsen pour poste telephonique
FR2518854B1 (fr) * 1981-12-18 1986-08-08 Thomson Csf Mat Tel Poste telephonique a amplificateurs de parole

Also Published As

Publication number Publication date
FR2610772B2 (fr) 1989-04-28
FR2610772A2 (fr) 1988-08-12
EP0280105A1 (fr) 1988-08-31
EP0280105B1 (fr) 1991-05-15
ATE63659T1 (de) 1991-06-15
GR3002352T3 (en) 1992-12-30
DE3862772D1 (de) 1991-06-20

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